CN102705242B - A kind of compressor and controlling method realizing the control of Twin channel back pressure cavity recirculating oil quantity - Google Patents
A kind of compressor and controlling method realizing the control of Twin channel back pressure cavity recirculating oil quantity Download PDFInfo
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- CN102705242B CN102705242B CN201210216964.0A CN201210216964A CN102705242B CN 102705242 B CN102705242 B CN 102705242B CN 201210216964 A CN201210216964 A CN 201210216964A CN 102705242 B CN102705242 B CN 102705242B
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Abstract
The invention discloses a kind of compressor and the controlling method that realize the control of Twin channel back pressure cavity recirculating oil quantity, compressor comprises compressor housing, electric machine support, Moving plate is provided with in described compressor housing, wear-resistant pad is provided with between described electric machine support and described Moving plate, described wear-resistant pad is provided with the through hole being communicated with drain path internal check valve, described wear-resistant pad is also provided with at least one overflow hole, and the setting position of described overflow hole makes described Moving plate can cover described overflow hole discontinuously and open when rotated.Controlling method comprises step: A1, on wear-resistant pad, arrange the through hole being communicated with drain path internal check valve; A2, on described wear-resistant pad, arrange at least one overflow hole, the setting position of described overflow hole makes Moving plate can cover described overflow hole discontinuously and open when rotated.
Description
Technical field
The present invention relates to Compressor Technology field, be specifically related to a kind of compressor and the controlling method that realize the control of Twin channel back pressure cavity recirculating oil quantity.
Background technique
As shown in Figure 1, Figure 2 and Figure 3, electric scroll refrigeration compressor is divided into hyperbaric chamber 11, middle pressure chamber/back pressure cavity 12, low-pressure cavity 13 3 pressure chambers in middle inside in working order.Between price fixing 15 and compressor case 14, form hyperbaric chamber 11, press chamber/back pressure cavity 12 in being formed between Moving plate 16 and electric machine support 18, all the other inner spaces are low-pressure cavity 13.The gas mixture of discharging from price fixing relief opening carries out Oil-gas Separation at hyperbaric chamber 11, hyperbaric chamber 11 bottom is provided with a spill port 19, spill port front end is provided with filter element, and the oil separated is back to middle pressure chamber/back pressure cavity 12 by the oil-return groove 171 on wear-resistant pad 17.Electric machine support 18 is provided with the drain path 181 of middle pressure chamber/back pressure cavity 12 to low-pressure cavity 13, wear-resistant pad 17 is provided with the hole C being communicated with drain path 181, and the outlet port of drain path 181 arranges an one-way valve 182, one-way valve 182 is made up of steel ball, spring, spring seat, in the middle of pressure chamber/back pressure cavity 12 and low-pressure cavity 13 pressure difference be greater than one-way valve 182 when pressure is set, oil enters low-pressure cavity 13 by one-way valve 182, forms interior oil circulation.
Such scheme is can realize setting up middle pressure chamber/Pressure in Back-pressure Cavity (abbreviation back pressure) and the internal lubrication reaching a certain amount of oil circulates and maintains certain back pressure technically simultaneously, but the unstability of one-way valve 182 can cause compressor operating unstable, cause the excessive or mal-compression of compressor horsepower, the serious consequence even do not compressed.
Existing compressor start also enters the normal process run: during startup, suction pressure of compressor is equal with exhaust pressure, three cavity pressures (low-pressure cavity pressure P s, middle pressure chamber/Pressure in Back-pressure Cavity Pb, hyperbaric chamber pressure P d) of compressor inside are equal, Moving plate 16 presses close to price fixing 15 under the effect of wear-resistant pad 17 elastic force, form compression, the pressure of hyperbaric chamber 11 increases thereupon.Like this, Pd>Pb, the oil gas made in hyperbaric chamber 11 flows to middle pressure chamber/back pressure cavity 12 by the generation of pressure difference, and presses the pressure of chamber/back pressure cavity 12 in increasing.Before middle pressure chamber/back pressure cavity 12 pressure reaches the pressure set by one-way valve 182, one-way valve 182 is closed.
Moving plate 16 bear between the area Sb of middle pressure chamber/Pressure in Back-pressure Cavity and Moving plate 16 bear the area Ss of low-pressure cavity pressure, Moving plate 16 bears hyperbaric chamber pressure area Sd be have a certain proportion of, in design for ensureing that Topland excellent sealing can be coiled with fixed 15 in Moving plate 16 tooth bottom surface, contact force is unlikely to again excessive simultaneously, and the expectation target that design will reach is:
A*（Sd*Pd+Ss*Ps）<Sb*Pb<B*（Sd*Pd+Ss*Ps）
A, B are empirical coefficient, desirable A=1.1 ~ 1.2, B=1.4 ~ 1.5;
After middle pressure cavity pressure reaches the pressure set by one-way valve 182, one-way valve 182 is dynamically crack to be opened, to maintain one-way valve both sides equilibrium of forces.During normal Start-up and operating performance, according to flow restriction and the loop of design, middle pressure chamber/Pressure in Back-pressure Cavity Pb can meet above-mentioned formula, and compressor well runs.Because of structural reason, need to ask the spring of one-way valve 182 to meet above-mentioned relation formula in less regime of elastic deformation.But compressor needs adaptation air-conditioning system operating mode in a big way sometimes: namely after structure is fixing, Pd, Ps can change because of the change of system at any time, in the running, Sd, Ss are in fact also along with the angle of engagement changes, under the situation of some less stables, the state of equilibrium described by above-mentioned relation formula may be caused to be broken:
As Sd*Pd+Ss*Ps>Sb*Pb, namely the stressed Moving plate 16 backboard face that is greater than of Moving plate 16 compressed side institute is stressed, Moving plate 16, price fixing 15 will be separated, cause both can not good engagement, pressurized gas at the bottom of tooth top tooth between the two between leak, produce mal-compression or non-compression phenomena.The inducement producing this phenomenon has: 1) the unexpected increase of pressure of inspiration(Pi); 2) one-way valve aperture (excessive aperture) out of control.
When Moving plate 16 compressed side, institute is stressed stressed much larger than Moving plate 16 backboard face, during as Sb*Pb> (1.6 ~ 2) * (Sd*Pd+Ss*Ps), Moving plate 16 will press to price fixing 15 with larger pressure, simultaneously wear-resistant pad 17(is also spring sheet element) and Moving plate 16 backboard face between frictional force also increase, cause power to increase serious.The inducement producing this phenomenon has: one-way valve aperture (crossing small guide vane) out of control.Therefore provide a kind of reliable, stable middle pressure chamber/back pressure cavity recirculating oil quantity control gear extremely urgent.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of compressor and the controlling method that realize the control of Twin channel back pressure cavity recirculating oil quantity, the compressor overcoming prior art causes compressor operating unstable because of non-return valve operational instability, the defect of the excessive or mal-compression of compressor horsepower.
The present invention for solving the problems of the technologies described above adopted technological scheme is:
According to an aspect of the present invention, the invention provides a kind of compressor realizing Twin channel back pressure cavity recirculating oil quantity and control, comprise compressor housing, electric machine support, Moving plate is provided with in this compressor housing, wear-resistant pad is provided with between this electric machine support and this Moving plate, this wear-resistant pad is provided with the through hole being communicated with drain path internal check valve, this wear-resistant pad is also provided with at least one overflow hole, and the setting position of this overflow hole makes this Moving plate can cover and open this overflow hole discontinuously when rotated.
Preferably, this overflow hole is arranged in an endless belt on this wear-resistant pad, the inner ring center of circle of this endless belt is the center of this wear-resistant pad, its diameter is that the external diameter of this Moving plate supporting surface deducts the rotating center of described Moving plate and the twice of described electric machine support centre distance, the center of circle, outer ring of this endless belt is the center of this wear-resistant pad, and its diameter is that the external diameter of this Moving plate supporting surface adds the rotating center of this Moving plate and the twice of this electric machine support centre distance.
According to one embodiment of present invention, the maximum radius of this overflow hole is set to the rotating center of this Moving plate and the distance at this electric machine support center.
According to one embodiment of present invention, the material of this wear-resistant pad is set to steel disc.
According to one embodiment of present invention, between this wear-resistant pad and this electric machine support, at least part of region is provided with gap.
According to a further aspect in the invention, this aspect provides a kind of method realizing Twin channel back pressure cavity recirculating oil quantity and control, and comprises step:
A1, the through hole being communicated with drain path internal check valve is set on wear-resistant pad;
A2, on this wear-resistant pad, arrange at least one overflow hole, the setting position of this overflow hole makes Moving plate can cover and open this overflow hole discontinuously when rotated.
Preferably, this overflow hole is arranged in an endless belt on this wear-resistant pad, the inner ring center of circle of this endless belt is the center of this wear-resistant pad, its diameter is that the external diameter of this Moving plate supporting surface deducts the rotating center of described Moving plate and the twice of described electric machine support centre distance, the center of circle, outer ring of this endless belt is the center of this wear-resistant pad, and its diameter is that the external diameter of this Moving plate supporting surface adds the rotating center of this Moving plate and the twice of electric machine support centre distance.
According to one embodiment of present invention, the maximum radius of this overflow hole is set to the rotating center of this Moving plate and the distance at this electric machine support center.
According to one embodiment of present invention, the material of this wear-resistant pad is set to steel disc.
According to one embodiment of present invention, between this wear-resistant pad and this electric machine support, at least part of region is provided with gap.
Beneficial effect of the present invention: the present invention by arranging the through hole and overflow hole that are communicated with one-way valve simultaneously on wear-resistant pad, and form oil circulation in compressor inside, the responsibility maintaining Pressure in Back-pressure Cavity is born by one-way valve, overflow hole simultaneously.Overflow hole has good error correcting capability, when there is unstable inducement, overflow hole can eliminate rapidly its impact, and makes rapidly compressor return good operation state, be very beneficial for the reliability improving compressor, the present invention advances the progress of scroll compression machine technology greatly.
Accompanying drawing explanation
The present invention includes following accompanying drawing:
Fig. 1 is prior art electric scroll refrigeration compressor schematic diagram;
Fig. 2 is prior art wear-resistant pad schematic diagram;
Fig. 3 is prior art drain path and one-way valve schematic diagram;
Fig. 4 is wear-resistant pad schematic diagram of the present invention;
Fig. 5 is Moving plate schematic diagram of the present invention;
Fig. 6 is Moving plate sectional view of the present invention;
Fig. 7 is that the endless belt on wear-resistant pad of the present invention arranges schematic diagram;
Fig. 8 is that the gap between wear-resistant pad of the present invention and electric machine support arranges schematic diagram.
Embodiment
According to drawings and embodiments the present invention is described in further detail below:
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, the present invention realizes the compressor that Twin channel back pressure cavity recirculating oil quantity controls, comprise compressor housing 14, electric machine support 18, Moving plate 16 is provided with in compressor housing 14, wear-resistant pad 17 is provided with between electric machine support 18 and Moving plate 16, wear-resistant pad 17 is provided with the through hole C being communicated with drain path internal check valve, wear-resistant pad 17 is also provided with at least one overflow hole 172, and the setting position of overflow hole 172 makes Moving plate 16 can cover and open overflow hole 172 discontinuously when rotated.Preferably, overflow hole 172 is arranged in an endless belt 173 on wear-resistant pad 17, the inner ring center of circle of endless belt 173 is the center of wear-resistant pad 17, its diameter is that the external diameter of Moving plate 16 supporting surface deducts the rotating center of Moving plate 16 and the twice of electric machine support 18 centre distance R, the center of circle, outer ring of endless belt 173 is the center of wear-resistant pad 17, and its diameter is that the external diameter of Moving plate 16 supporting surface adds the rotating center of Moving plate 16 and the twice of electric machine support 18 centre distance R.According to one embodiment of present invention, the maximum radius of overflow hole 172 is set to the rotating center of Moving plate 16 and the distance R at electric machine support 18 center.The material of wear-resistant pad 17 is set to steel disc.Between wear-resistant pad 17 and electric machine support 18, at least part of region is provided with clearance t.
The present invention realizes the method that Twin channel back pressure cavity recirculating oil quantity controls, and comprises step:
A1, the through hole being communicated with drain path internal check valve is set on wear-resistant pad;
A2, on this wear-resistant pad, arrange at least one overflow hole, the setting position of this overflow hole makes Moving plate can cover and open this overflow hole discontinuously when rotated.
This overflow hole is arranged in an endless belt on this wear-resistant pad, the inner ring center of circle of this endless belt is the center of this wear-resistant pad, its diameter is that the external diameter of this Moving plate supporting surface deducts the rotating center of Moving plate and the twice of electric machine support centre distance, the center of circle, outer ring of this endless belt is the center of this wear-resistant pad, and its diameter is that the external diameter of this Moving plate supporting surface adds the rotating center of this Moving plate and the twice of electric machine support centre distance.According to one embodiment of present invention, the maximum radius of this overflow hole is set to the rotating center of this Moving plate and the distance at this electric machine support center.According to one embodiment of present invention, the material of this wear-resistant pad is set to steel disc.Between this wear-resistant pad and this electric machine support, at least part of region is provided with gap.
The present invention is at wear-resistant pad (wear-resistant pad is affixed to a spring sheet element of price fixing simultaneously as the anti-wear component between Moving plate and support and Moving plate) upper increase overflow hole, and this overflow hole need meet to return in the process of circling at Moving plate and covers discontinuously, opens.The diameter of overflow hole is larger, and the time of unlatching is shorter.The middle pressure lubricating flow of oil in middle pressure chamber flows into low-pressure cavity through overflow hole, consistent with the flow direction of one-way valve.
The benefit arranging this hole is:
1 as Sd*Pd+Ss*Ps>Sb*Pb, namely the stressed Moving plate backboard face that is greater than of Moving plate compressed side institute is stressed, dynamic price fixing will be separated, gap when Moving plate is fitted to holder orientation between wear-resistant pad and electric machine support is eliminated, overflow hole is closed condition, back pressure cavity can be formed rapidly again, equilibrium establishment relation;
2 when Moving plate compressed side stressed more to be greater than Moving plate backboard face stressed, during as Sb*Pb> (1.6 ~ 2) * (Sd*Pd+Ss*Ps), Moving plate will press to price fixing with larger pressure, gap between wear-resistant pad and electric machine support is maximum, namely overflow hole aperture is maximum, the pressure of back pressure cavity can be reduced rapidly, equilibrium establishment relation.
Those skilled in the art do not depart from essence of the present invention and spirit, various deformation scheme can be had to realize the present invention, the foregoing is only the better feasible embodiment of the present invention, not thereby interest field of the present invention is limited to, the equivalent structure change that all utilizations specification of the present invention and accompanying drawing content are done, is all contained within interest field of the present invention.
Claims (5)
1. one kind realizes the method for Twin channel back pressure cavity recirculating oil quantity control for compressor, electric machine support, Moving plate is provided with in compressor, electric machine support is provided with drain path, the outlet port of drain path arranges an one-way valve, wear-resistant pad is provided with between electric machine support and Moving plate, this wear-resistant pad is provided with the through hole being communicated with drain path internal check valve, it is characterized in that: the method comprises: on described wear-resistant pad, arrange at least one overflow hole, the setting position of described overflow hole makes Moving plate can cover and open described overflow hole discontinuously when rotated.
2. the method realizing the control of Twin channel back pressure cavity recirculating oil quantity for compressor according to claim 1, it is characterized in that: described overflow hole is arranged in an endless belt on described wear-resistant pad, the inner ring center of circle of described endless belt is the center of described wear-resistant pad, the inner ring diameter of endless belt is the difference that the external diameter of Moving plate supporting surface deducts the twice of the rotating center of described Moving plate and the centre distance of described electric machine support, the center of circle, outer ring of described endless belt is the center of described wear-resistant pad, the race diameter of endless belt is the twice sum that the external diameter of Moving plate supporting surface adds the rotating center of described Moving plate and the centre distance of electric machine support.
3. the method realizing the control of Twin channel back pressure cavity recirculating oil quantity for compressor according to claim 2, is characterized in that: the maximum radius of described overflow hole is set to the rotating center of Moving plate and the distance at electric machine support center.
4. the method realizing the control of Twin channel back pressure cavity recirculating oil quantity for compressor according to claim 3, is characterized in that: the material of described wear-resistant pad is set to steel disc.
5. the method realizing the control of Twin channel back pressure cavity recirculating oil quantity for compressor according to claim 4, is characterized in that: between described wear-resistant pad and described electric machine support, at least part of region is provided with gap.
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| CN201210216964.0A CN102705242B (en) | 2012-06-28 | 2012-06-28 | A kind of compressor and controlling method realizing the control of Twin channel back pressure cavity recirculating oil quantity |
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| CN107575385A (en) * | 2017-09-04 | 2018-01-12 | 江苏成科新能源有限公司 | A kind of scroll compressor of automobile air conditioner |
| CN107829930B (en) * | 2017-09-04 | 2020-06-30 | 江苏成科新能源有限公司 | Automobile air conditioner compressor |
| CN107575386B (en) * | 2017-09-27 | 2019-09-20 | 江苏成科新能源有限公司 | A kind of vortex type automobile air conditioner compressor |
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| CN202707504U (en) * | 2012-06-28 | 2013-01-30 | 陈冬长 | Compressor for realizing oil return quantity control of dual-channel backpressure cavity |
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| JPH06193570A (en) * | 1992-12-25 | 1994-07-12 | Hitachi Ltd | Closed scroll compressor |
| CN2175841Y (en) * | 1993-10-25 | 1994-08-31 | 西安交通大学 | Coiled compressor with backpressure controlling mechanism |
| CN1302206C (en) * | 1999-06-01 | 2007-02-28 | Lg电子株式会社 | Device for preventing vaccum in vortex compressor |
| JP2007270697A (en) * | 2006-03-31 | 2007-10-18 | Hitachi Ltd | Scroll fluid machine |
| JP5022291B2 (en) * | 2008-04-21 | 2012-09-12 | 日立アプライアンス株式会社 | Scroll compressor |
| JP5201113B2 (en) * | 2008-12-03 | 2013-06-05 | 株式会社豊田自動織機 | Scroll compressor |
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| CN202707504U (en) * | 2012-06-28 | 2013-01-30 | 陈冬长 | Compressor for realizing oil return quantity control of dual-channel backpressure cavity |
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Owner name: GUANGDONG CHANGHONG RIDIAN TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: CHEN DONGCHANG Effective date: 20150303 |
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Effective date of registration: 20150303 Address after: Liaobu Xixi Village town Guangdong city Dongguan province 523401 Jin Road No. 425 Applicant after: GUANGDONG DINGLI AUTOMOTIVE AIR CONDITIONING CO., LTD. Address before: 523560 Changping Dongguan Eurasia international business center, Guangdong 1204-1210, China Applicant before: Chen Dongchang |
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